Capuanus (crater)

Capuanus is a lunarimpact crater that lies along the southern edge of the Palus Epidemiarum. Surrounding craters are Mercator to the north, Cichus to the east, and the smaller Elger to the west. The outer rim is eroded and indented by lesser crater impacts, with notches in the north, west, and southern parts of the rim. The interior floor has been resurfaced by basalticlava, which is connected to the surrounding lunar mare by a narrow, crater-formed gap in the northern rim. The floor is particularly notable for the hosting a number of domes, which are believed to have formed through volcanic activity.

The rim reaches its maximum altitude along the western face, where it merges with ridges along the edge of the mare. To the northeast the rim dips down very close to the surface, and barely forms a curving ridge in the surface. The southeastern rim is overlaid by a pair of craters.

To the north of Capuanus is the western extreme of the wide rille named Rima Hesiodus, which runs to the east-northeast. To the west-northwest is the crater Ramsden, and between Capuanus and Ramsden lies a system of intersecting rilles named the Rimae Ramsden.

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